[revopushbot]

Step 5 of the CLI restructuring (REV-142). Code is moved without behaviour changes.

New layout

script/
  platforms/
    android/  gradle.ts (version + Hermes settings), binary.ts (apk/aab)
    ios/      xcode.ts (version + .xcode.env), binary.ts (ipa)
    react-native/
      bundler.ts      react-native bundle + expo export:embed
      hermes.ts       detection, hermesc lookup, compile, base bytecode
      project.ts      react-native package path and version
      source-maps.ts  source-map paths + metadata restore
  utils/  file-utils, hash-utils, sign, validation-utils, release-size-utils

What moved

• Split by platform: react-native-utils, binary-utils and expo-utils are gone; their code is split into the files above. utils/gradle-utils, ios-utils, hermes-utils and source-map-utils moved into platforms/.
• Bundle commands: the react-native and Expo bundle commands moved from command-executor to bundler.ts. The executor still runs the release.
• Import loop removed: the last loop (hermes → gradle → react-native-utils → hermes) is gone, because the small React Native project helpers now live in their own files.
• One version type: the three identical version types are now one cli.ProjectVersionInfo.
• Small helpers: isValidVersion moved to validation-utils, and the zip helper both binary readers share moved to file-utils.
• Signing and hashing: hash-utils and sign moved to utils/. The ticket said sdk/, but the API client doesn't use either of them.
• Dead code: removed the unused execSync export from command-executor.
• Tests: test files are renamed to match, and the two source-map test files are merged. Tests that fake the bundler process now stub spawn in bundler.ts instead of the executor.

Verification against main

Check	Result
24 release-react/release-expo runs (iOS and Android, all options, signing, error cases) through a fake SDK and bundler	All 476 transcript lines identical
45 CLI commands against a fake server	Same output, exit codes and server requests
Native release: Android metadata zip and /nativerelease upload	Same zip, same request

• Comparison caveat: the native and command comparisons differ only in temp-folder names and in timing-dependent stack frames inside libraries. I compared them with those normalised.
• Not covered: the iOS .ipa reader isn't covered by tests or by these checks. It was moved without edits.
• Build, lint and format: tsc, npm run lint and npm run format:check are clean.
• Tests: all 159 pass on macOS and on Linux (Docker, Node 20.19.0).

The review found some existing bugs: the bundler treats being killed by a signal as success, has no spawn error handler, and passes a blank CODE_PUSH_NODE_ARGS through as an empty argument; hermesc also receives CODE_PUSH_NODE_ARGS. I didn't fix them here, to keep this a pure move. They're tracked in REV-144.

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